73271740 has 12 divisors (see below), whose sum is σ = 153870696. Its totient is φ = 29308688.

The previous prime is 73271713. The next prime is 73271749. The reversal of 73271740 is 4717237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73271749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831774 + ... + 1831813.

It is an arithmetic number, because the mean of its divisors is an integer number (12822558).

Almost surely, 2^73271740 is an apocalyptic number.

It is an amenable number.

73271740 is an abundant number, since it is smaller than the sum of its proper divisors (80598956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73271740 is a wasteful number, since it uses less digits than its factorization.

73271740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663596 (or 3663594 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 73271740 is about 8559.8913544507. The cubic root of 73271740 is about 418.4518590659.

Adding to 73271740 its reverse (4717237), we get a palindrome (77988977).

The spelling of 73271740 in words is "seventy-three million, two hundred seventy-one thousand, seven hundred forty".